PAM 8403 Amplifier Module with Knob

Upgrade your audio projects with the PAM8403 Amplifier Module, a compact yet powerful Class-D stereo amplifier board designed for high efficiency and superior sound quality. Unlike standard amplifier modules, this version comes equipped with a built-in potentiometer knob, giving you convenient manual control over volume and a physical On/Off switch.

High Efficiency Class-D Architecture

The PAM8403 chip utilizes advanced filter-less architecture, allowing it to drive speakers directly without low-pass output filters. This design reduces board size and costs while maintaining low Total Harmonic Distortion plus Noise (THD+N). Its high efficiency extends battery life significantly compared to Class-AB alternatives, making it the perfect choice for portable, battery-powered electronics.

Enhanced Performance

This module features an upgraded 470uF power supply filter capacitor, ensuring stable voltage delivery and cleaner sound output. Whether you are building a custom Bluetooth speaker, adding voice to a robot, or retrofitting an old radio, this board delivers crisp stereo sound from a tiny footprint.

Key Features

• Dual 3W Output: Drives two 3W speakers (4Ω load) with 5V power.

• Integrated Control: Potentiometer knob handles both volume adjustment and power switching.

• Wide Voltage Range: Operates smoothly between 2.5V and 5.5V (USB power compatible).

• Filter-less Design: Direct drive capability preserves signal integrity.

• Compact Form Factor: Measures just 30mm x 22mm, fitting easily into small enclosures.

• Protection: Excellent noise suppression and low interference.

Technical Specifications

Typical Application Scenarios

• Portable Audio: DIY Bluetooth speakers and boomboxes.

• Robotics: Voice synthesis and sound effects for hobby robots.

• Computing: Audio upgrades for Raspberry Pi or Arduino projects.

• Displays: Adding audio to LCD monitors or TV projectors.

• Retrofitting: Repairing or upgrading old game consoles and radios.

4. Package Includes

• 1 x PAM8403 Amplifier Module with Potentiometer Knob

  (Note: Wires and speakers are not included)

Important Product Disclaimer

Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. Product images are shown for illustrative purposes only and may differ from the actual product.

Note

Usage Warning: Do NOT exceed 5.5V input voltage and strictly avoid reverse polarity connection (“+” and “-“). Doing so will permanently damage the IC.